St. Jacob Township, Madison County, Illinois

St. Jacob Township is located in Madison County, Illinois, in the United States. As of the 2010 census, its population was 2,578 and it contained 981 housing units.

Geography
According to the 2010 census, the township has a total area of 35.95 sqmi, of which 35.6 sqmi (or 99.03%) is land and 0.35 sqmi (or 0.97%) is water.